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c++ Programming Glossary: sieveBrute-force, single-threaded prime factorization http://stackoverflow.com/questions/3918968/brute-force-single-threaded-prime-factorization question Compare such an approach to a pre generated sieve. Modulo is expensive so both approaches essentially do two things.. operator. I'll call it a skip filter. On the other hand a sieve uses only primes as arguments to the modulo operator and the.. 2^32 are considered 5 is a good rule of thumb. Therefore a sieve will spend 5 times less time on div operations as your skip..
Which is the fastest algorithm to find prime numbers? http://stackoverflow.com/questions/453793/which-is-the-fastest-algorithm-to-find-prime-numbers algorithm to find out prime numbers using C I have used sieve's algorithm but I still want it to be faster c primes share.. of the Sieve of Atkin is Dan Bernstein's primegen . This sieve is more efficient than the Sieve of Eratosthenes . His page..
Porting optimized Sieve of Eratosthenes from Python to C++ http://stackoverflow.com/questions/5293238/porting-optimized-sieve-of-eratosthenes-from-python-to-c Python to C Some time ago I used the blazing fast primesieve in python that I found here Fastest way to list all primes below.. a list of primes 2 p n n correction n n 6 6 2 n 6 1 sieve True n 3 for i in xrange 1 int n 0.5 3 1 if sieve i k 3 i 1.. 2 n 6 1 sieve True n 3 for i in xrange 1 int n 0.5 3 1 if sieve i k 3 i 1 1 sieve k k 3 2 k False n 6 k k 6 1 k 1 sieve k k..
C++ Prime Numbers program [closed] http://stackoverflow.com/questions/14574823/c-prime-numbers-program question Provided your X is small enough you can use the Sieve of Eratosthenes to do it more efficiently. This is ideal for..
Factor a large number efficiently with gmp http://stackoverflow.com/questions/4301434/factor-a-large-number-efficiently-with-gmp than just a stupid division. Look at Quadratic Sieve try wikipedia . It is quite simple but very powerful. If you..
Which is the fastest algorithm to find prime numbers? http://stackoverflow.com/questions/453793/which-is-the-fastest-algorithm-to-find-prime-numbers improve this question A very fast implementation of the Sieve of Atkin is Dan Bernstein's primegen . This sieve is more efficient.. primegen . This sieve is more efficient than the Sieve of Eratosthenes . His page has some benchmark information. ..
Porting optimized Sieve of Eratosthenes from Python to C++ http://stackoverflow.com/questions/5293238/porting-optimized-sieve-of-eratosthenes-from-python-to-c optimized Sieve of Eratosthenes from Python to C Some time ago I used the blazing..
generating prime numbers? [closed] http://stackoverflow.com/questions/6156959/generating-prime-numbers c# c c primes share improve this question The Sieve of Atkin is generally preferred over the Sieve of Eratosthenes...
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